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THE INDUSTRIAL MINERAL DATABASE
Occurence 3105 - 307 Sagbakken
(Object Id: 8806)
(Last updated: 01.10.2024)

Location
County: Østfold Municipality: Sarpsborg (3105)
Map 1:50000: Sarpsborg (1913-1) Map 1:250000: Oslo
Coordinate system: EU89-UTM Zone 32 (Coordinates NOT confirmed)
East: 630668 m. North: 6573892 m.
Longitude: 11.2935700 Latitude: 59.2837030
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Resource
Resource Type: Silica Resource Subtype: Pegmatitic quartz

Importance
Raw material meaning: Not Assessed (reg. 18.02.2015)


Mineralization
Genesis: Form:
Main texture: Min. distribution:
Main grain size:
Strike/Dip: Direction:
Plunge:
Stratigraphic classification of host rock
Era: Period:
Province:
Geotec.unit:
Tectonic complex:
Igneous complex:
Group: Formation:

Information(s) in free text format
Free text
Broch (1934) beskriver beliggenheten som "Vel 100 m øst for sagen sydøst for Iversby kapell" ... "i utmark på Skjeberg kommunes grunn" ... "et mindre brudd 30-40 m fra landeveien. Bil kan kjøres frem til bruddet." Det er et åpent dagbrudd i vestskråningen av en knaus hvor gangen følger åssiden. Et annet brudd er beskrevet "Nogen hundrede meter sønnenfor er der i åssiden, like op for veien et noget mindre brudd." Begge ble drevet et par års tid rundt 1930 og det ble produsert kvarts og "3.sort" feltspat.
Location
Bør muligens flyttes, men det er usikkert hvor eksakt lokalitet bør være. Sagbruket som nevnes i stedsbeskrivelsen kan være Høyfoss sag i Buerbekken.

Bibliography:
From NGU's Reference Archive:
Broch, Olaf Anton , 1934
Feltspat IV. Forekomster i Akershus og Østfold øst for Glomma.
;Norges geologiske undersøkelse;TIDSSKRIFTARTIKKEL;NGU; No.141;1-119 pages
Abstract:
In this publication, which is a sequel to Feltspat II and III by Olaf Andersen and Tom F.W. Barth, brief and exoteric descriptions and some information on production and history are given of about 180 individual feldspar, quartz, and mica deposits, all of them situated east of the river Glomma in south-eastern Norway. Particulars of purely geological or mineralogical interest are few; most of them are given as footnotes or in the preface, but the minerals of each deposit, exceot quartz, feldspar and mica, are listed. The deposits are cross cutting pegmatite dikes, with a northeastern strike and a steep dip. The dikes exhibit a marked zoning; moreover, they are remarkably free from rare minerals, the occurrences of which seems to be restricted almost entirely to the dikes near the Idefjord (Bohus) granite.


The fact sheet was created on 30.06.2025

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